vats bypass

I have found the vats wires in my 1997 grand am. yellow,black and yellow/white.I cut the yellow with the car running and the security/theft light came on.Turn off the car and start with the remote start everything works normally with the theft light on.took the resistor reading came up with 1554ohms.Put 1554 ohm resistor to the bcm side of yellow wire and attach the other side of resistor to the black wire.theft light still on.Turn off car and start with key.the theft light goes away.use remote start and car cranks but wont start.Do I cut the black wire and put resistor between yellow and black on bcm side the black wire is still joined and uncut.

Any info would be appreciated.

Here is the complete Audiovox Passlock 1 method of bypassing the immobilizer system during remote start using relays :

http://documents.audiovox.com/700056.pdf

Any possibility that the remote start wiring is wrong?

I followed the wiring  schematic I found on the 12volt board.I even used the third ignition wire  that has to be used for remote start.I am assuming that the ignition wires are all positive . With the vats switched off and the theft light on the remote start works everytime.

By "vats switched off" do you mean the Yellow Passlock1 wire cut and no resistor / relay connected?

Were you having intermittent start-up problems with the key before the upgrade? 

Sounds like you might have the wrong resistor value.  Try the measuring procedure again.  I usually try to get within +-2%.

I cut the yellow vats wire and installed a switch.There were no problems with the vats system I just want to put a remote start in the car.I have used DEI bypass modules before but I find that they are not that reliable. When I first turn on the ignition and test resistance I get 1647 ohms. If I keave the ignition on for a while it drops to 1544 +/-. 

My information indicates that your 1997 Grand Am has the Passlock1 system.  The VATS system

Here is the Passlock1 bypass write-up and diagram from Omega :

http://www.wiringinstructions.com/v2/diagrams200/233%20-%20General%20Motors%20Passlock%201%20System%20Interface.pdf

The Bulb Test circuit is important and necessary.  On Passlock1 vehicles I usually use

passkey resistance 1546 ohms.My resistor 1568 ohms still well within the 5% required remote start wont start car.Used audiovox schematic in previous poststill nothing. Does the bulb test wire show ground at rest. 12volts ignition on and ground again in crank?Im getting a little frustrated with this install!